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Schubert S, Lehmkuhl H, Huebler M, Hetzer R, Berger F. 318: Comparison of De Novo Everolimus, AZA and MMF in Cyclosporine Based Immunosuppressive Protocol in Pediatric Heart Transplant Patients. J Heart Lung Transplant 2010. [DOI: 10.1016/j.healun.2009.11.331] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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127
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Schubert S, Lehmkuhl H, Yegitbasi M, Huebler M, Hiemann N, Hetzer R, Berger F. 528: The Doppler Derived Myocardial Performance Index (MPI) May Detect Patients with Coronary Allograft Vasculopathy (CAV) in Pediatric Heart Transplant Recipients. J Heart Lung Transplant 2010. [DOI: 10.1016/j.healun.2009.11.545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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128
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Wadl M, Heckenbach K, Noll I, Ziesing S, Pfister W, Beer J, Schubert S, Eckmanns T. Increasing Occurrence of Multidrug-Resistance in Acinetobacter baumannii Isolates From Four German University Hospitals, 2002–2006. Infection 2010; 38:47-51. [DOI: 10.1007/s15010-009-9225-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Accepted: 10/13/2009] [Indexed: 10/19/2022]
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Schneider R, Bercker S, Schubert S, Tillmann H, Fangmann J, Hauss J, Bartels M. Successful Liver Transplantation in Antituberculosis Therapy–Induced Acute Fulminant Hepatic Failure. Transplant Proc 2009; 41:3934-6. [DOI: 10.1016/j.transproceed.2009.01.118] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2008] [Revised: 10/29/2008] [Accepted: 01/08/2009] [Indexed: 11/25/2022]
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130
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Liao Y, Deprez L, Anttonen AK, Maljevic S, Claes L, Hristova D, Jordanova A, Ala-Mello S, Liukkonen E, Gaily E, Bellan-Koch A, Blazevic D, Schubert S, Thomas EA, Petrou S, Ahonen VE, De Joghe P, Lehesejoki AE, Lerche H. Genetics and differenzial developmental expression of the Na+ channel gene SCN2A reveal molecular correlates for early-onset (neonatal-infantile) seizures and late-onset episodic ataxia, myoclonus and pain. AKTUELLE NEUROLOGIE 2009. [DOI: 10.1055/s-0029-1238449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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131
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Kramer A, Schubert S, Förster K, Kirsten W, Flemmer AW, Schulze A. Kolonisation von Frühgeborenen unter 1500g nach Applikation des Probiotikums E. coli Nissle. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1223033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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132
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Flemmer AW, Schubert S, Kramer A, Förster K, Schulze A. Antibiotische Therapie bei Ureaplasma-Urealyticum Kolonisation. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1222929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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133
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Schubert S, Abdul-Khaliq H, Lehmkuhl HB, Yegitbasi M, Reinke P, Kebelmann-Betzig C, Hauptmann K, Gross-Wieltsch U, Hetzer R, Berger F. Diagnosis and treatment of post-transplantation lymphoproliferative disorder in pediatric heart transplant patients. Pediatr Transplant 2009; 13:54-62. [PMID: 18518912 DOI: 10.1111/j.1399-3046.2008.00969.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
PTLD is a severe complication in transplant recipients. Detection of increased EBV load in the peripheral blood acts as a surrogate marker for increased risk of PTLD development. We analyzed the time course of the disease, its severity, the organs involved, and mortality rates in our institutional experience of pediatric heart transplantation. This paper identifies risk factors for PTLD and describes the different ways of diagnosing and treating the disease. PTLD was screened for in 146 pediatric heart transplant patients using a retrospective analysis in patients who received transplantation before 1998. Prospective determination was performed in 72/146 patients transplanted after 1998 within the post-transplant follow-up. The occurrence of PTLD with all interventions, including tapering of immunosuppression, surgery, viral monitoring, and antiviral interventions, was recorded. PTLD was diagnosed in 12/147 (8.2%) children at a mean age of 7.2 +/- 3.3 yr after a mean post-transplant period of 3.2 +/- 2.2 yr. PTLD manifested in: lymph nodes (n = 4), intestine (n = 3), tonsils and adenoids (n = 2), eye (n = 2), and lung (n = 1). It was diagnosed in 7/12 as a monomorphic B-cell lymphoma and in four patients as a monomorphic Burkitt lymphoma, a polymorphic B-cell lymphoma, a T-cell rich or angiocentric lymphoma (Liebow) and as reactive plasmacytic hyperplasia (early lesion), respectively. Histology was not possible in one patient with ocular manifestation. EBV association was 83%. Risk factors in the comparison with patients without PTLD were age at time of Tx, primary EBV infection after Tx, use of Azathioprine and >or=3 doses of ATG. CMV mismatch and CMV infection, rejection episodes and steroids were not risk factors. Despite reduction of immunosuppression, treatment consisted of surgical procedures to remove tumor masses (n = 6), Rituximab (n = 5), polychemotherapy (n = 3), antiviral (n = 1) and autologous T-cell therapy (n = 1). All patients demonstrated full remission without death related to PTLD or treatment at 3.9 (1.3-6.2) yr median follow-up time. The manifestation of PTLD in pediatric heart transplant recipients is associated with EBV infection and is predominantly in the form of a B-cell lymphoma. A tight and specific follow-up including early assessment of immunity status and specific therapeutic intervention to improve cellular immunity is warranted and may contribute to a significant reduction of PTLD-related morbidity and mortality.
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Lehmkuhl H, Schubert S, Dandel M, Knosalla C, Hubler M, Grauhan O, Hetzer R. 483: Everolimus in Pediatric Heart Transplantation: Report on Efficacy, Phamacokinetics and Safety in Infants below the Age of 1 Year. J Heart Lung Transplant 2009. [DOI: 10.1016/j.healun.2008.11.490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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135
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Knosalla C, Weng Y, Hübler M, Alexi-Meskishvili V, Pasic M, Grauhan O, Dandel M, Hiemann N, Schubert S, Miera O, Lehmkuhl HB, Berger F, Hetzer R. 22 years single center experience in paediatric heart transplantation. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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136
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Regenhard P, Leippe M, Schubert S, Podschun R, Kalm E, Grötzinger J, Looft C. Antimicrobial activity of bovine psoriasin. Vet Microbiol 2008; 136:335-40. [PMID: 19167844 DOI: 10.1016/j.vetmic.2008.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Revised: 12/02/2008] [Accepted: 12/02/2008] [Indexed: 10/21/2022]
Abstract
Human psoriasin (S100A7) has originally been described as a member of the family of S100 calcium-binding proteins which is overexpressed in patients suffering from psoriasis. The bovine homolog was first identified as a cow-derived respiratory allergen. As Escherichia coli mastitis is a common problem in dairy cattle, and human psoriasin was found to exhibit antimicrobial activity preferentially against E. coli, we examined whether the bovine mRNA is expressed in the mammary gland. To demonstrate the antimicrobial activity of bovine psoriasin, we isolated cDNA from the udder, cloned the bovine psoriasin gene in a bacterial expression vector, and the recombinant protein was expressed in BL21 cells. The in vitro antibacterial activity was tested by performing microdilution susceptibility tests and radial diffusion assays with eight different bacterial strains, thereof three different E. coli strains, and one yeast. The antimicrobial activity of the recombinant bovine psoriasin is comparable with human psoriasin and also limited to E. coli. Psoriasin appears to be a part of the local host defense mechanism in the udder, is a putative candidate for a cow-specific factor influencing mastitis susceptibility, and a possible alternative to conventional antibiotics.
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137
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Carter JM, Buerke U, Rössner E, Russ M, Schubert S, Schmidt H, Ebelt H, Pruefer D, Schlitt A, Werdan K, Buerke M. Anti-inflammatory actions of aprotinin provide dose-dependent cardioprotection from reperfusion injury. Br J Pharmacol 2008; 155:93-102. [PMID: 18536753 PMCID: PMC2527842 DOI: 10.1038/bjp.2008.223] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2007] [Revised: 11/29/2007] [Accepted: 04/17/2008] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND AND PURPOSE Myocardial injury following ischaemia and reperfusion has been attributed to activation and transmigration of polymorphonuclear leukocytes (PMNs) with release of mediators including oxygen-derived radicals and proteases causing damage. EXPERIMENTAL APPROACH We studied the serine protease inhibitor aprotinin in an in vivo rabbit model of 1 h of myocardial ischaemia followed by 3 h of reperfusion (MI+R). Aprotinin (10,000 Ukg(-1)) or its vehicle were injected 5 min prior to the start of reperfusion. KEY RESULTS Myocardial injury was significantly reduced with aprotinin treatment as indicated by a reduced necrotic area (11+/-2.7% necrosis as percentage of area at risk after aprotinin; 24+/-3.1% after vehicle; P<0.05) and plasma creatine kinase activity (12.2+/-1.5 and 17.3+/-2.3 IU g(-1) protein in aprotinin and vehicle groups, respectively, P<0.05). PMN infiltration (assessed by myeloperoxidase activity) was significantly decreased in aprotinin-treated animals compared to vehicle (P<0.01). Histological analysis also revealed a substantial increase in PMN infiltration following MI+R and this was significantly reduced by aprotinin therapy (44+/-15 vs 102+/-2 PMN mm2 in aprotinin vs vehicle-treated animals, P<0.05). In parallel in vitro experiments, aprotinin inhibited neutrophil-endothelium interaction by reducing PMN adhesion on isolated, activated aortic endothelium. Finally, immunohistochemical analysis illustrated aprotinin significantly reduced myocardial apoptosis following MI+R. CONCLUSIONS AND IMPLICATIONS Inhibition of serine proteases by aprotinin inhibits an inflammatory cascade initiated by MI+R. The cardioprotective effect appears to be at least partly due to reduced PMN adhesion and infiltration with subsequently reduced myocardial necrosis and apoptosis.
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138
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Warnke PH, Becker ST, Springer ING, Haerle F, Ullmann U, Russo PAJ, Wiltfang J, Fickenscher H, Schubert S. Penicillin compared with other advanced broad spectrum antibiotics regarding antibacterial activity against oral pathogens isolated from odontogenic abscesses. J Craniomaxillofac Surg 2008; 36:462-7. [PMID: 18760616 DOI: 10.1016/j.jcms.2008.07.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 06/20/2008] [Accepted: 07/12/2008] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES We examined the spectrum of oral pathogens found in odontogenic abscesses and their susceptibility to penicillin as well as to amoxicillin with clavulanic acid, doxycycline, clindamycin and moxifloxacin. The in vitro results were compared with clinical observations. PATIENTS AND METHODS One hundred and eighty eight swabs were obtained from 94 patients with odontogenic abscesses. Bacterial strains were isolated for susceptibility tests. The same patients were investigated for their clinical outcome after standard therapy. RESULTS A total of 517 bacterial strains were isolated from 94 patients. Ninety eight per cent of abscesses were polymicrobial. The most prevalent bacteria were Viridans streptococci representing 54% of the aerobic/facultative anaerobic bacteria. Prevotella spp. comprised 53% of the anaerobes. No multiresistant strains were detected. Susceptibility testing revealed a sensitivity of over 99% of aerobes/facultative aerobes and 96% of anaerobes sensitivity for moxifloxacin. The corresponding values for penicillin were lowest at 61% and 79%, respectively. In the clinical collective, patients with minor abscesses and no risk of further progression received surgical treatment without antibiotics (36%). Penicillin was administered additionally in 30%. Amoxicillin with clavulanic acid was given in 18% and clindamycin in 15%. Ninety two of the 94 patients showed significant recovery with the described treatment. Only in two cases was a change to the latest broader spectrum antibiotics necessary. CONCLUSION In contrast to the moderate in vitro results, penicillin successfully treated the pathogens derived from odontogenic abscess sufficiently when adequate surgical treatment was provided. One third of the patients was treated successfully with incision and drainage only. We suggest that one good reason for its clinical efficacy is the susceptibility of the dominant aerobe/facultative aerobe and anaerobe strains to penicillin.
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139
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Singethan K, Müller N, Schubert S, Lüttge D, Krementsov DN, Khurana SR, Krohne G, Schneider-Schaulies S, Thali M, Schneider-Schaulies J. CD9 clustering and formation of microvilli zippers between contacting cells regulates virus-induced cell fusion. Traffic 2008; 9:924-35. [PMID: 18363777 PMCID: PMC2992846 DOI: 10.1111/j.1600-0854.2008.00737.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Members of the tetraspanin family including CD9 contribute to the structural organization and plasticity of the plasma membrane. K41, a CD9-specific monoclonal antibody, inhibits the release of HIV-1 and canine distemper virus (CDV)- but not measles virus (MV)-induced cell-cell fusion. We now report that K41, which recognizes a conformational epitope on the large extracellular loop of CD9, induces rapid relocation and clustering of CD9 in net-like structures at cell-cell contact areas. High-resolution analyses revealed that CD9 clustering is accompanied by the formation of microvilli that protrude from either side of adjacent cell surfaces, thus forming structures like microvilli zippers. While the cellular CD9-associated proteins beta(1)-integrin and EWI-F were co-clustered with CD9 at cell-cell interfaces, viral proteins in infected cells were differentially affected. MV envelope proteins were detected within CD9 clusters, whereas CDV proteins were excluded from CD9 clusters. Thus, the tetraspanin CD9 can regulate cell-cell fusion by controlling the access of the fusion machinery to cell contact areas.
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MESH Headings
- Animals
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/metabolism
- Antibodies, Monoclonal/ultrastructure
- Antibodies, Viral/immunology
- Antibodies, Viral/ultrastructure
- Antigens, CD/immunology
- Antigens, CD/metabolism
- Antigens, CD/ultrastructure
- CHO Cells
- Cell Communication
- Cell Fusion
- Cells, Cultured
- Chlorocebus aethiops
- Cricetinae
- Cricetulus
- Distemper Virus, Canine/genetics
- Distemper Virus, Canine/pathogenicity
- Dogs
- Endothelial Cells/immunology
- Endothelial Cells/ultrastructure
- Endothelial Cells/virology
- Endothelium, Vascular/cytology
- Fluorescent Antibody Technique, Indirect
- HeLa Cells
- Humans
- Kinetics
- Measles virus/genetics
- Measles virus/pathogenicity
- Membrane Glycoproteins/immunology
- Membrane Glycoproteins/metabolism
- Membrane Glycoproteins/ultrastructure
- Microvilli/metabolism
- Microvilli/ultrastructure
- Tetraspanin 29
- Transfection
- Umbilical Veins/cytology
- Vero Cells
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140
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Hinrichsen K, Podschun R, Schubert S, Schröder JM, Harder J, Proksch E. Mouse beta-defensin-14, an antimicrobial ortholog of human beta-defensin-3. Antimicrob Agents Chemother 2008; 52:1876-9. [PMID: 18332171 PMCID: PMC2346663 DOI: 10.1128/aac.01308-07] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Revised: 11/06/2007] [Accepted: 02/27/2008] [Indexed: 11/20/2022] Open
Abstract
Searching the database for mouse homologs of the antimicrobial peptide human beta-defensin-3 (hBD-3) revealed highest identity (69%) to mouse beta-defensin-14 (mBD-14). Recombinant mBD-14 exhibited broad-spectrum, nanomolar microbicidal activity. Treatment of keratinocytes with gamma interferon or transforming growth factor alpha increased mBD-14 gene expression. These data suggest that mBD-14 is the functional ortholog of hBD-3.
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141
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Pani E, Menigatti M, Schubert S, Hess D, Gerrits B, Klempnauer KH, Ferrari S. Pin1 interacts with c-Myb in a phosphorylation-dependent manner and regulates its transactivation activity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2008; 1783:1121-8. [PMID: 18359295 DOI: 10.1016/j.bbamcr.2008.02.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2007] [Revised: 02/04/2008] [Accepted: 02/19/2008] [Indexed: 10/22/2022]
Abstract
Activity and stability of the proto-oncogene c-Myb are regulated by post-translational modifications, though the molecular mechanisms underlying such control are only partially understood. Here we describe the functional interaction of c-Myb with Pin1, an isomerase that binds to phosphorylated Ser/Thr-Pro motifs. We found that co-expression of c-Myb and Pin1 led to a net increase of c-Myb transactivation activity, both on reporter constructs as well as on an endogenous target gene. DNA-binding studies revealed that Pin1 did not increase the association of c-Myb with its response element in DNA. The increase of c-Myb transactivation activity was strictly dependent on the presence of an active catalytic center in Pin1. We provide evidence that c-Myb and Pin1 physically interacted, both upon ectopic expression of the proteins in HEK-293 cells as well as in the more physiological setting of HL60 cells, where c-Myb and Pin1 are resident proteins. By point mutating each individual Ser/Thr-Pro motif in c-Myb as well as by using deletion mutants we show that S528 in the EVES-motif was the docking site for Pin1. Mass spectrometry confirmed that S528 is phosphorylated in vivo. Finally, functional studies showed that mutation of S528 to alanine almost abolished the increase of transactivation activity by Pin1. This study reveals a new paradigm by which phosphorylation controls c-Myb function.
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142
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Warnke PH, Becker ST, Springer ING, Härle F, Ullmann U, Russo PAJ, Wiltfang J, Fickenscher H, Schubert S. 'Grandmother penicillin'--not in vogue, but clinically still effective. J Antimicrob Chemother 2008; 61:960-2. [PMID: 18230689 DOI: 10.1093/jac/dkn030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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143
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Reiss-Zimmermann M, Kahn T, Schubert S, Borte G. Tuberkulose: Epidemiologie, klinische und morphologische Diagnostik. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1074066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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144
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Richter E, Tortoli E, Fischer A, Hendricks O, Engel R, Hillemann D, Schubert S, Kristiansen JE. Mycobacterium alsiense, a novel, slowly growing species isolated from two patients with pulmonary disease. J Clin Microbiol 2007; 45:3837-9. [PMID: 17804654 PMCID: PMC2168491 DOI: 10.1128/jcm.01097-07] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A previously undescribed, slowly growing Mycobacterium species was isolated from pulmonary specimens of two patients, one from Denmark and one from Italy. The isolates showed unique 16S rRNA internal transcribed spacers and hsp65 sequences: the 16S rRNA was most closely related to Mycobacterium szulgai and Mycobacterium malmoense.
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145
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Benedek O, Schubert S. Mobility of the Yersinia High-Pathogenicity Island (HPI): transfer mechanisms of pathogenicity islands (PAIS) revisited (a review). Acta Microbiol Immunol Hung 2007; 54:89-105. [PMID: 17899790 DOI: 10.1556/amicr.54.2007.2.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Horizontal gene transfer (HGT) plays a key role in the evolution of bacterial pathogens. The exchange of genetic material supplies prokaryotes with several fitness traits enhancing their adaptive response to environmental changes. Pathogenicity islands (PAIs) represent an important and in most cases already immobilized subset of the different vehicles for HGT. Encoding several virulence factors PAls represent a major contribution to bacterial pathogenicity. Nonetheless, the transfer mechanisms of PAIs still remain elusive. We summarise the currently available data regarding the major ways of genetic mobilisation with a focus on the transfer of the Yersinia High-Pathogenicity Island (HPI).
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146
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Humpe A, Jansen P, Tischer BK, Schubert S, Beck C, Adamzik ID, Maas JH, Strate A, Gramatzki M, Riggert J. Cryopreservation of cellular products in a closed-bag system with an incorporated dimethyl sulfoxide-resistant sterile filter outside of cleanroom facilities. Transfusion 2007; 47:1033-41. [PMID: 17524094 DOI: 10.1111/j.1537-2995.2007.01232.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Manipulations, for example, cryopreservation, of cellular therapeutics carried out in an open system must be performed in a class A environment with surrounding class B environment. To avoid cleanroom facilities, a new closed-bag system with an incorporated dimethyl sulfoxide-resistant sterile filter for cryopreservation of cellular products was evaluated at two different centers. STUDY DESIGN AND METHODS A total of 44 different products (22 buffy coats [BCs] and 22 leukapheresis [LK] products) were split and cryopreserved in parallel in cleanroom facilities (Method I) and with the closed system on the bench of a "normal" laboratory (Method II). Viability analyzed by 7-aminoactinomycin D staining and flow cytometric analysis and sterility of the products were analyzed. RESULTS Independent of the cellular source (BC or LK), the median viability of CD45+ cells decreased significantly (p < 0.01) during cryopreservation: namely, in BCs, -15.8 percent with both methods, and in LK products, -5.4 percent with Method I and -4.8 percent with Method II, respectively. CD3+ as well as CD14+ cells exhibited a similar pattern and were also found significantly (p < 0.01) diminished after thawing independent of the handling system. For CD19+ cells, the small decrease of viability was only for the BC group significant (p = 0.027) when the cells had been processed with Method I. No bacterial contamination was detected neither in fresh products nor in products after cryopreservation. CONCLUSION The closed system for cryopreservation of cellular products appears to be equivalent to cleanroom-based methods regarding cellular integrity and sterility when appropriate quality of sterile filters is assured.
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147
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Mennel S, Schubert S, Müller C. [Refractory intermediate uveitis in the presence of unexplained joint disease. Diagnosis: Tropheryma whipplei (Morbus Whipple)]. Ophthalmologe 2007; 105:176-9. [PMID: 17522867 DOI: 10.1007/s00347-007-1526-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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148
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Schubert S, Fegert J, Schulze U. Atomoxetin bei Patienten mit Klinefelter-Syndrom und hyperkinetischer Störung des Sozialverhaltens. Monatsschr Kinderheilkd 2007. [DOI: 10.1007/s00112-007-1501-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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149
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Ablonczy L, Schubert S, Lehmkuhl H, Miera O, H[ue]bler M, Knosalla C, Grauhan O, Abdul-Khaliq H, Berger F, Hetzer R. 213: Pediatric heart transplantation: Implications for 2 hour cyclosporin a blood levels greater 600 ng/ml for graft protection monitoring. J Heart Lung Transplant 2007. [DOI: 10.1016/j.healun.2006.11.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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150
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Knosalla C, Weng Y, Hübler M, Alexi-Meskishvili V, Pasic M, Stiller B, Schmitt-Knosalla I, Grauhan O, Dandel M, Hiemann N, Schubert S, Lehmkuhl H, Berger F, Hetzer R. Paediatric Heart transplantation –20 years single center experience. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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